It’s not just spelling. Someone on here (and I wouldn’t dream of being rude enough to be any more specific than that) has the loosest grasp (see what I did there) of punctuation that I’ve ever seen. “Idea’s” is my favourite. Makes my brain do a little recoil and double take every time. Life would be dull without it.
I’m not immune either. It’s interesting how the brain works. I sometimes type a “their” when I mean “they’re” and it’s not until I read it back that I can see that it’s clearly wrong and have to correct it.

There seems to be quite a spate of people starting to use "aloud" on my Facebook, when they clearly mean "allowed". Some of the people using it I can understand why, but others are actually quite educated and in real life appear normal...yet still ask "selling some bikes if its aloud on here" f'ristance ...